Analog Devices Inc. LT8350/LT8350S Synchronous Buck-Boost Converters
Analog Devices Inc. LT8350/LT8350S Synchronous Buck-Boost Converters are monolithic 4-switch synchronous buck-boost converters. The LT8350x converters feature a Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at a high switching frequency. The switchers regulate the output voltage and input/output current from input voltages above, below, or equal to the output voltage.
Features
- 4-switch single inductor architecture allows VIN above, below or equal to VOUT
- Silent Switcher® Architecture for low EMI
- Up to 95% efficiency at 2MHz
- Proprietary peak current mode
- 3V to 40V input voltage range
- 1V to 18V output voltage range
- ±1.5% output voltage regulation
- Output/input current regulation and monitor
- Constant-voltage/constant-current regulation
- High-side PMOS load switch driver
- No top MOSFET refresh noise in Buck or Boost
- 200kHz to 2MHz fixed switching frequency with external frequency synchronization and SSFM
- VOUT disconnected from VIN during shutdown
- Maximum junction temperatures
- +150°C for LT8350
- +125°C for LT8350S
- Internal caps (LT8350S only)
- Small 4mm × 6mm 32-pin LQFN package
- AEC-Q100 qualified
Applications
- Automotive, industrial, telecom systems
- Voltage regulator with accurate current limit
- High-frequency battery-powered system
- USB power delivery (USB-PD) source
TYPICAL APPLICATION
Package Outline
Evaluation Board
Analog Devices Inc. EVAL-LT8350S-AZ Evaluation Board
Based on the LT8350S 40V synchronous buck-boost converter, offering high efficiency in a small size.
Published: 2022-08-18
| Updated: 2025-03-19